What is meant by elevation in boiling point? Why is it a colligative property?
The increase in boiling point of the solvent in a solution when a non-volatile solute is added.
Because it depends upon molality/the number of solute particles rather than their nature
Detailed Answer:
Elevation in boiling point can be defined as an increase in boiling point of the solvent in a solution on addition of a non-volatile solute.
It is considered as a colligative property because it depends upon the number of solute particles dissolved in a definite amount of the solvent and not on the nature of the solute.
Because it depends upon molality/the number of solute particles rather than their nature
Detailed Answer:
Elevation in boiling point can be defined as an increase in boiling point of the solvent in a solution on addition of a non-volatile solute.
It is considered as a colligative property because it depends upon the number of solute particles dissolved in a definite amount of the solvent and not on the nature of the solute.
In a galvanic cell, the following cell reactions occurs:
E°cell = +1.56 V
(i) Is the direction of flow of electrons from zinc to silver or silver to zinc?
(ii) How will concentration of Zn²⁺ ions and Ag⁺ ions be affected when the cell functions?
Calculate the molality of ethanol solution in which the mole fraction of water is 0.88.
A 1.00 molar aqueous solution of trichloroacetic acid (CCl₃COOH) is heated to its boiling point. The solution has the boiling point of 100.18 °C. Determine the van’t Hoff factor for trichloroacetic acid. ( for water = 0.512 K kg mol⁻¹).
Complete the following chemical equations :
(i) MnO₄⁻(aq) + S₂O₃²⁻(aq) + H₂O(l) →
(ii) Cr₂O₇²⁻(aq) + Fe²⁺(aq) + H⁺(aq) →
Complete and balance the following chemical equations:
(a) Fe²⁺ + MnO₄⁻ + H⁺ →
(b) MnO₄⁻ + H₂O + I⁻ →
Explain the following observations:
(i) Copper atom has completely filled d orbitals (3d¹⁰) in its ground state, yet it is regarded as a transition element.
(ii) Cr²⁺ is a stronger reducing agent than Fe²⁺ in aqueous solution.
What is meant by rate of a reaction ? Differentiate between average rate and instantaneous rate of a reaction.